Cita APA (7th ed.)

Kuchler, F., & Duffy, M. (1984). Control of exotic pests: Forecasting economic impacts. U.S. Dept. of Agriculture, Economic Research Service : [Can be purchased from the Supt. of Docs., U.S. G.P.O..

Cita Chicago (17th ed.)

Kuchler, Fred, i Michael Duffy. Control of Exotic Pests: Forecasting Economic Impacts. Washington, D.C.: U.S. Dept. of Agriculture, Economic Research Service : [Can be purchased from the Supt. of Docs., U.S. G.P.O., 1984.

Cita MLA (8th ed.)

Kuchler, Fred, i Michael Duffy. Control of Exotic Pests: Forecasting Economic Impacts. U.S. Dept. of Agriculture, Economic Research Service : [Can be purchased from the Supt. of Docs., U.S. G.P.O., 1984.